47 lines
1.4 KiB
Dart
47 lines
1.4 KiB
Dart
// Copyright 2014 The Flutter Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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import 'package:flutter/material.dart';
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import 'package:flutter_api_samples/material/scrollbar/scrollbar.0.dart'
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as example;
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import 'package:flutter_test/flutter_test.dart';
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void main() {
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testWidgets(
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'Scrollbar.0 works well on all platforms',
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(WidgetTester tester) async {
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await tester.pumpWidget(const example.ScrollbarExampleApp());
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final Finder buttonFinder = find.byType(Scrollbar);
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await tester.drag(buttonFinder.last, const Offset(0, 100.0));
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expect(tester.takeException(), isNull);
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},
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variant: TargetPlatformVariant.all(),
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);
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testWidgets('The scrollbar should be painted when the user scrolls', (
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WidgetTester tester,
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) async {
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await tester.pumpWidget(const example.ScrollbarExampleApp());
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await tester.pump();
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await tester.pump(
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const Duration(milliseconds: 10),
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); // Wait for the thumb to start appearing.
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expect(find.text('item 0'), findsOne);
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expect(find.text('item 9'), findsNothing);
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expect(find.byType(Scrollbar), isNot(paints..rect()));
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await tester.fling(
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find.byType(Scrollbar).last,
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const Offset(0, -300),
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10.0,
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);
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expect(find.text('item 0'), findsNothing);
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expect(find.text('item 9'), findsOne);
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expect(find.byType(Scrollbar).last, paints..rect());
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});
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}
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